Load Specifications
Load data in caliber .357 Auto Mag. with .355 | 90gr | MEN QD1 bullet and 54 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Herco, Baschieri & Pellagri 102 Pistol and Vihtavuori N32C Tin Star.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 60% and propellant combustion ≥ 80%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 68% | 30,879 psi | 83% | 1821 fps | 100% |
| Accurate No. 7*² | <<locked>> | 72% | 33,141 psi | 90% | 1998 fps | 88.1% |
| Accurate Solo 1000² | <<locked>> | 68% | 30,864 psi | 83% | 1699 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 76% | 33,272 psi | 90% | 1818 fps | 100% |
| ADI AP 100 | <<locked>> | 88% | 30,313 psi | 82% | 1890 fps | 95.5% |
| ADI APS 350² | <<locked>> | 68% | 32,518 psi | 88% | 1588 fps | 100% |
| ADI APS 450² | <<locked>> | 68% | 31,082 psi | 84% | 1608 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 32,982 psi | 89% | 1696 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 32,518 psi | 88% | 1749 fps | 100% |
| Alliant BE-86² | <<locked>> | 72% | 31,343 psi | 85% | 1759 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 64% | 30,516 psi | 83% | 1850 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 33,170 psi | 90% | 1765 fps | 100% |
| Alliant Herco | <<locked>> | 88% | 31,821 psi | 86% | 1867 fps | 100% |
| Alliant POWER PISTOL*² | <<locked>> | 72% | 29,979 psi | 81% | 1932 fps | 94.4% |
| Alliant RED DOT² | <<locked>> | 72% | 31,865 psi | 86% | 1703 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 29,878 psi | 81% | 1841 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 33,054 psi | 89% | 1742 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 31,415 psi | 85% | 1722 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 33,286 psi | 90% | 1759 fps | 100% |
| Hodgdon Clays² | <<locked>> | 76% | 30,821 psi | 83% | 1601 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,216 psi | 47% | 1362 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 31,473 psi | 85% | 1801 fps | 100% |
| Lovex D037.1*² | <<locked>> | 72% | 33,141 psi | 90% | 1998 fps | 88.1% |
| Lovex S020² | <<locked>> | 68% | 31,966 psi | 86% | 1834 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 30,893 psi | 84% | 1765 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 30,632 psi | 83% | 1765 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 31,473 psi | 85% | 1749 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 30,197 psi | 82% | 1699 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 30,255 psi | 82% | 1637 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 64% | 31,952 psi | 86% | 1765 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,650 psi | 42% | 1358 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 76% | 32,285 psi | 87% | 1880 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 76% | 30,995 psi | 84% | 1939 fps | 89.4% |
| Rottweil P 806 | <<locked>> | 80% | 30,777 psi | 83% | 1965 fps | 99% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 33,141 psi | 90% | 1998 fps | 88.1% |
| SNPE Vectan A0² | <<locked>> | 76% | 31,009 psi | 84% | 1811 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 31,154 psi | 84% | 1749 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 30,269 psi | 82% | 1762 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 31,647 psi | 86% | 1617 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 80% | 30,356 psi | 82% | 1850 fps | 99% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 33,257 psi | 90% | 1821 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 68% | 29,762 psi | 80% | 1939 fps | 96% |
| Somchem MP200² | <<locked>> | 68% | 31,241 psi | 84% | 1857 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 31,415 psi | 85% | 1831 fps | 100% |
| Somchem S221*² | <<locked>> | 64% | 31,604 psi | 85% | 1932 fps | 93.1% |
| Vihtavuori 3N37² | <<locked>> | 76% | 32,706 psi | 88% | 1929 fps | 99.8% |
| Vihtavuori 3N38* | <<locked>> | 88% | 30,313 psi | 82% | 1916 fps | 90.1% |
| Vihtavuori N105 | <<locked>> | 96% | 33,054 psi | 89% | 2047 fps | 95.5% |
| Vihtavuori N320² | <<locked>> | 68% | 32,750 psi | 89% | 1749 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 31,488 psi | 85% | 1624 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 32,082 psi | 87% | 1814 fps | 100% |
| Vihtavuori N340² | <<locked>> | 72% | 30,893 psi | 84% | 1824 fps | 100% |
| Vihtavuori N350 | <<locked>> | 80% | 31,082 psi | 84% | 1893 fps | 99.7% |
| Winchester AutoComp ² | <<locked>> | 76% | 32,648 psi | 88% | 1818 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 23,946 psi | 65% | 1667 fps | 99.5% |
| Accurate No. 7*² | <<locked>> | 68% | 28,456 psi | 77% | 1890 fps | 85.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 25,019 psi | 68% | 1585 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 21,205 psi | 57% | 1565 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 17,869 psi | 48% | 1539 fps | 86.4% |
| ADI APS 350² | <<locked>> | 60% | 26,629 psi | 72% | 1483 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,715 psi | 70% | 1506 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 24,700 psi | 67% | 1539 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,542 psi | 72% | 1634 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,988 psi | 59% | 1568 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 27,412 psi | 74% | 1781 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 24,279 psi | 66% | 1588 fps | 100% |
| Alliant Herco² | 9.3 gr | 60% | 15,505 psi | 42% | 1434 fps | 97.3% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,494 psi | 55% | 1667 fps | 87.7% |
| Alliant RED DOT² | <<locked>> | 60% | 23,627 psi | 64% | 1539 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 21,408 psi | 58% | 1634 fps | 99.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,627 psi | 64% | 1565 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 8.7 gr | 60% | 15,040 psi | 41% | 1355 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 26,049 psi | 70% | 1631 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,248 psi | 57% | 1407 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,789 psi | 21% | 1007 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 25,469 psi | 69% | 1677 fps | 100% |
| Lovex D037.1*² | <<locked>> | 68% | 28,456 psi | 77% | 1890 fps | 85.1% |
| Lovex S020² | <<locked>> | 60% | 25,179 psi | 68% | 1696 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,899 psi | 54% | 1526 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 21,857 psi | 59% | 1581 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,931 psi | 62% | 1575 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,424 psi | 66% | 1585 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,398 psi | 74% | 1585 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 28,732 psi | 78% | 1709 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,324 psi | 20% | 997 fps | 97.9% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 19,812 psi | 54% | 1601 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 27,238 psi | 74% | 1847 fps | 87% |
| Rottweil P 806*² | <<locked>> | 60% | 14,982 psi | 41% | 1509 fps | 88% |
| Shooters World Major Pistol*² | <<locked>> | 68% | 28,456 psi | 77% | 1890 fps | 85.1% |
| SNPE Vectan A0² | <<locked>> | 60% | 20,160 psi | 55% | 1555 fps | 99.4% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,729 psi | 67% | 1621 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,888 psi | 65% | 1624 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 28,311 psi | 77% | 1555 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 60% | 16,998 psi | 46% | 1483 fps | 91.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 23,511 psi | 64% | 1624 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 22,698 psi | 61% | 1752 fps | 91.8% |
| Somchem MP200² | <<locked>> | 60% | 24,845 psi | 67% | 1716 fps | 99.9% |
| Somchem MS200² | <<locked>> | 60% | 22,234 psi | 60% | 1624 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 27,151 psi | 73% | 1824 fps | 90.5% |
| Vihtavuori 3N37² | <<locked>> | 60% | 19,841 psi | 54% | 1608 fps | 95.1% |
| Vihtavuori 3N38* | <<locked>> | 80% | 24,308 psi | 66% | 1762 fps | 85.9% |
| Vihtavuori N105* | <<locked>> | 80% | 19,798 psi | 54% | 1696 fps | 85.8% |
| Vihtavuori N320² | <<locked>> | 60% | 25,962 psi | 70% | 1627 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.8 gr | 60% | 13,184 psi | 36% | 1220 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 24,714 psi | 67% | 1670 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 21,567 psi | 58% | 1611 fps | 99.9% |
| Vihtavuori N350*² | <<locked>> | 60% | 17,085 psi | 46% | 1516 fps | 93.2% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,914 psi | 57% | 1568 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 54 powders for .357 Auto Mag. loaded with the .355 | 90gr | MEN QD1. Vihtavuori N105 delivers the highest muzzle velocity at 2,047 fps; across all powders the maximum-charge window runs from 1,358 fps to 2,047 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 11 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (255 MPa), the top charges use 42–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Herco, Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star rank at the top here: for .357 Auto Mag. with the .355 | 90gr | MEN QD1 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 7, Alliant POWER PISTOL, Lovex D037.1 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.